of the united states. i'm struck how often he kept saying, i am the president, i know what it's really like. and the man who came in talking about the audacity of hope, talking about hope over and over again still. >> it was a different speech from four years ago. it was not triumphant. it was sobering. you heard the president say i'm a president who has changed, a president who is mindful of his own failings. and he said a country that learns from its mistakes. >> let's watch now as his family comes out on the stage, there, of course, sasha and malia, ages 14 and 11 now. >> who are going to school tomorrow. >> he said they're going to school tomorrow. high school, of course for malia. we'll go to jake tapper who is right there in the midst of it all. >> i completely agree with george. such a different speech than the one we heard in denver four years ago. the poetry at the end, the soaring rhetoric that we're used to hear from president obama and candidate obama. but a lot of it was more pros when he talk